import router from './router'
import {constantRoutes} from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
import fa from 'element-ui/src/locale/lang/fa'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/404', '/nopermission', '/shenhe'] // no redirect whitelist

const getRoutesNode = (routes, routeName)=>{
  if(Array.isArray(routes)){
    let len = routes.length
    for(let i=0; i<len;i++){
      if(routes[i].name === routeName){
        return routes[i]
      }else{
        if(routes[i].children){
          let c = getRoutesNode(routes[i].children, routeName)
          if (c != null) {
            return c
          }
        }
      }
    }
  }
  return null;
}

router.beforeEach(async(to, from, next) => {
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  const hasToken = getToken()
  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done()
    } else if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
      NProgress.done()
    } else {
      let permission=true;
      let node=getRoutesNode(constantRoutes, to.name)
      if(node==null){
        permission=false
      }else if(node.hidden){
        permission=false
      }
      if(!permission){
        next({ path: '/nopermission' })
        NProgress.done()
      }else{
        const hasGetUserInfo = store.getters.name
        if (hasGetUserInfo) {
          next()
          NProgress.done()
        } else {
          try {
            // get user info
            await store.dispatch('user/getInfo')
            next()
            NProgress.done()
          } catch (error) {
            // remove token and go to login page to re-login
            await store.dispatch('user/resetToken')
            Message.error(error || 'Has Error')
            next(`/login?redirect=${to.path}`)
            NProgress.done()
          }
        }
      }
    }
  } else {
    //has no token
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
      NProgress.done()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
